2. Methods
The pilot-scale experiments on Construct wetland treatment of landfill
leachate were conducted under ambient condition with
an average temperature of about 30 C. Sanitary landfill
leachate samples, collected from the Pathumthani municipal
landfill site, located about 30 km north-east of Bangkok
city, Thailand, had characteristics as shown in Table
1. These data were obtained from analyses of leachate samples
collected six times during the period of November
2003 and February 2005. The leachate characteristics
showed a wide variation depending on tropical climatic
changes such as monsoon and dry periods, similar to those
found in other places (Tchobanoglous et al., 1993).